420643132142 has 16 divisors (see below), whose sum is σ = 667614690960. Its totient is φ = 198219612672.

The previous prime is 420643132141. The next prime is 420643132153. The reversal of 420643132142 is 241231346024.

It is a junction number, because it is equal to n+sod(n) for n = 420643132099 and 420643132108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420643132141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28670273 + ... + 28684940.

It is an arithmetic number, because the mean of its divisors is an integer number (41725918185).

Almost surely, 2^420643132142 is an apocalyptic number.

420643132142 is a deficient number, since it is larger than the sum of its proper divisors (246971558818).

420643132142 is a wasteful number, since it uses less digits than its factorization.

420643132142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57355427.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 420643132142 its reverse (241231346024), we get a palindrome (661874478166).

The spelling of 420643132142 in words is "four hundred twenty billion, six hundred forty-three million, one hundred thirty-two thousand, one hundred forty-two".